| 45 William Street, Pontypridd | - | 78 m² | - |
| 46, William Street, Pontypridd | Freehold | 73 m² | £75,000 (2023) |
| 48, William Street, Pontypridd | Freehold | 76 m² | £132,950 (2021) |
| 49, William Street, Pontypridd | Freehold | 73 m² | £64,000 (2003) |
| 51 William Street, Pontypridd | Freehold | 76 m² | £155,000 (2026) |
| 52, William Street, Pontypridd | Freehold | 77 m² | £52,000 (2014) |
| 53, William Street, Pontypridd | Freehold | 74 m² | £86,000 (2015) |
| 54 William Street, Pontypridd | Freehold | 73 m² | £32,000 (1996) |
| 57, William Street, Pontypridd | Freehold | 104 m² | £70,000 (2021) |
| 58 William Street, Pontypridd | Freehold | 73 m² | £27,000 (2001) |
| 61, William Street, Pontypridd | Freehold | 82 m² | £110,000 (2019) |
| 63, William Street, Pontypridd | Freehold | 57 m² | £127,000 (2021) |
| 64, William Street, Pontypridd | Freehold | 76 m² | £33,600 (2025) |
| 66 William Street, Pontypridd | - | 73 m² | - |
| 67, William Street, Pontypridd | Freehold | 77 m² | £94,500 (2017) |
| 68, William Street, Pontypridd | Freehold | 74 m² | £109,000 (2019) |
| 69, William Street, Pontypridd | Freehold | 80 m² | £98,000 (2019) |
| 70, William Street, Pontypridd | Freehold | 78 m² | £85,000 (2020) |
| 71 William Street, Cilfynydd, Pontypridd, Pontypridd | Freehold | 81 m² | £23,000 (2002) |
| 72, William Street, Pontypridd | Freehold | 70 m² | £138,000 (2023) |
| 74, William Street, Pontypridd | Freehold | 82 m² | £85,000 (2014) |
| 75, William Street, Pontypridd | Freehold | 103 m² | £89,500 (2018) |
| 77, William Street, Pontypridd | - | 76 m² | - |
| 78, William Street, Pontypridd | Freehold | 71 m² | £138,995 (2021) |
| 79, William Street, Pontypridd | Freehold | 83 m² | £93,500 (2018) |
| 81, William Street, Pontypridd | Freehold | 77 m² | £159,950 (2022) |
| 82, William Street, Pontypridd | - | 76 m² | - |
| Flat 1, Cwrt Bethel, William Street, Pontypridd | Leasehold | 44 m² | £39,999 (2024) |
| Flat 2, Cwrt Bethel, William Street, Pontypridd | - | 57 m² | - |
| Flat 3 Cwrt Bethel, William Street, Pontypridd | Leasehold | 46 m² | £80,000 (2023) |
| Flat 4, Cwrt Bethel, Pontypridd | Leasehold | 46 m² | £78,200 (2006) |
| Flat 5, Cwrt Bethel, William Street, Pontypridd | Leasehold | 58 m² | £80,000 (2026) |
| Flat 6, Cwrt Bethel, William Street, Pontypridd | Leasehold | 44 m² | £38,000 (2015) |
| Flat 7 Cwrt Bethel, William Street, Pontypridd | Leasehold | 6 m² | £54,000 (2003) |